I have a 96 pontiac sunfire, the clock on the radio didn't work when I bought then worked for an hour just out of the blue one day. Then all of a sudden the rmp will just shoot down then back up to normal. All the windows in the car except driver side quit working almost completely. Running lights turn on but when I try to put headlights on I have to turn them on and off twice before they click on. I am assuming it's electrical, how can I find the problem though? I don't know where to begin.